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Resolved Question

What lens aperture is requires to create a bokeh?

Jan 20, 2012 8:32AM PST

is it possibe with a lens of f:/3 and above?
And question number 2 is a wide angle lens the same as a fisheye lens?

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Best Answer

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Shallow Depth of Field
Jan 20, 2012 8:48AM PST

First, bokeh is merely the quality of the out-of-focus elements in an image with a shallow depth of field. Second, achieving a shallow depth of field is dependent on the things: focal length, aperture, and distance to the subject. It is also dependent upon the type of camera; it is far easier to achieve a shallow depth of field with a DSLR than a compact camera. This video explains: http://youtu.be/OUYuUs1aaCU

As for fisheye lenses, those are a type of very wide angle lens; most wide angle lenses are not fisheyes.

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Thanks!
Jan 20, 2012 11:27AM PST

what does a 2x telephoto lens do? is it considered some type of wide angle lens?

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2x Converter
Jan 20, 2012 2:55PM PST

Assuming you mean a 2x converter, a converter is added between the camera body and the primary lens and it multiplies the magnification of the primary lens. In other words, it you had a DSLR camera with a 50mm lens, and you added a 2x converter, you would then have a 100mm lens. If you used the 2x converter with a zoom lens, it would double those values as well, i.e. an 18-55mm lens would become a 36-110mm lens. The problem with converters is a loss of light and poorer image quality. You are better off using an appropriate lens than using a converter. The only good reason to use a converter is to obtain a very long focal length that is either not made or prohibitively expensive to purchase.

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Macro lens with wide angle?
Jan 22, 2012 2:24AM PST

Is it good to have a macro wide angle lens? or is it better to have a separate macro lens and wide angle lens?